You are aiming x100 in just a couple of years? That's a very high target. If that is what you are really up to, the first thing I want to tell you is to stay away from the top 10 coins. Such coins may give you a low-risk or even certain profit but not x100 in just two years. I will recommend that you make a survey of the most successful ICOs and then buy their coins while still getting dumped by hunters and other investors enjoying the offered discounts during the ICO. Consider Eidoo, Titanium, Swissborg, Crypterium, and Envion.